15 typedef unsigned short ushort;
16 #endif /* __CYGWIN__ */
19 typedef struct bitmap_s { /* bitmap description */
22 uint8_t palette[256*3];
26 #define DEFAULT_CMAP_SIZE 16 /* size of default color map */
29 * Neutralize little endians.
31 uint16_t le_short(uint16_t x)
34 uint8_t *p = (uint8_t *)(&x);
36 val = (*p++ & 0xff) << 0;
37 val |= (*p & 0xff) << 8;
42 void skip_bytes (FILE *fp, int n)
48 int main (int argc, char *argv[])
57 fprintf (stderr, "Usage: %s file\n", argv[0]);
61 if ((fp = fopen (argv[1], "rb")) == NULL) {
66 if (fgetc (fp) != 'B' || fgetc (fp) != 'M') {
67 fprintf (stderr, "%s is not a bitmap file.\n", argv[1]);
72 * read width and height of the image, and the number of colors used;
76 fread (&b->width, sizeof (uint16_t), 1, fp);
78 fread (&b->height, sizeof (uint16_t), 1, fp);
80 fread (&n_colors, sizeof (uint16_t), 1, fp);
86 b->width = le_short(b->width);
87 b->height = le_short(b->height);
88 n_colors = le_short(n_colors);
90 /* assume we are working with an 8-bit file */
91 if ((n_colors == 0) || (n_colors > 256 - DEFAULT_CMAP_SIZE)) {
92 /* reserve DEFAULT_CMAP_SIZE color map entries for default map */
93 n_colors = 256 - DEFAULT_CMAP_SIZE;
97 " * Automatically generated by \"tools/bmp_logo\"\n"
102 "#ifndef __BMP_LOGO_H__\n"
103 "#define __BMP_LOGO_H__\n\n"
104 "#define BMP_LOGO_WIDTH\t\t%d\n"
105 "#define BMP_LOGO_HEIGHT\t\t%d\n"
106 "#define BMP_LOGO_COLORS\t\t%d\n"
107 "#define BMP_LOGO_OFFSET\t\t%d\n"
109 b->width, b->height, n_colors,
112 /* allocate memory */
113 if ((b->data = (uint8_t *)malloc(b->width * b->height)) == NULL) {
115 printf ("Error allocating memory for file %s.\n", argv[1]);
119 /* read and print the palette information */
120 printf ("unsigned short bmp_logo_palette[] = {\n");
122 for (i=0; i<n_colors; ++i) {
123 b->palette[(int)(i*3+2)] = fgetc(fp);
124 b->palette[(int)(i*3+1)] = fgetc(fp);
125 b->palette[(int)(i*3+0)] = fgetc(fp);
131 printf ("0x%02X, 0x%02X, 0x%02X,%s",
132 b->palette[(int)(i*3+0)],
133 b->palette[(int)(i*3+1)],
134 b->palette[(int)(i*3+2)],
135 ((i%4) == 3) ? "\n" : " "
140 printf ("0x0%X%X%X,%s",
141 (b->palette[(int)(i*3+0)] >> 4) & 0x0F,
142 (b->palette[(int)(i*3+1)] >> 4) & 0x0F,
143 (b->palette[(int)(i*3+2)] >> 4) & 0x0F,
144 ((i%8) == 7) ? "\n" : " "
149 /* read the bitmap; leave room for default color map */
153 printf ("unsigned char bmp_logo_bitmap[] = {\n");
154 for (i=(b->height-1)*b->width; i>=0; i-=b->width) {
155 for (x = 0; x < b->width; x++) {
156 b->data[(uint16_t) i + x] = (uint8_t) fgetc (fp) \
162 for (i=0; i<(b->height*b->width); ++i) {
167 ((i%8) == 7) ? '\n' : ' '
172 "#endif /* __BMP_LOGO_H__ */\n"